Centrifugal flour-bolt



3 SheetsSlieet 1. A. P. HOLUOMB. & A. HEINE- (No Model.)

GENTRIFUGAL FLOUR BOLT.

Patented Feb. 6, 1883. Fig.4.

fay. J.

Jab-22 9%!- (No Model.) 3Sheets-Sheet 2.

A. P. HOLGOMB & A. HEINE.

GBNTRIFUGAL FLOUR BOLT.

'N0.271,846, Patented Feb.6,1883'.

I Jzy' 1 147. a

3 Sheets-Sheet 3.

(No Model.) A. P. HOLOOMB & A. HEINE.

OENTRIQFUGALIFLOUR BOLT. Patented Feb. 6, 1883.

N. PETEHS. Pholrrbtbognpimr, wmm tm u. c.

UNITED) STATES PATENT OFFICE.

ABEL P. HOLOOMB AND AUGUST HEINE, OF SILVER CREEK, NEW YORK.

' CENTRI FUGAL FLOUR-BOLT.

SPECIFICATION forming part of Letters Patent No. 271,846, dated February 6, 1883,

7 Application filed November 4,1882. (No model.)

To all whom it may concern: J

Be itknown that we, ABEL P. HOLCOMB and AUGUST HEINE, of Silver Creek, in the county of Chautauqua and State of New York, have invented newand useful improvements in Gentrifugal Flour-Bolts, of which the following is disintegrating and separating the material beforeit reaches the bolting-surface by excluding the air as much as possible from the interior of the bolting-cylinder, and in other particulars; an'd our invention consists of the improvements which are hereinafter more fully "section in line mm, Fig. 1.

described, and pointed out in the claims.

In the accompanying drawings, consisting ofthree sheets, Figure 1 is a longitudinal sectional elevation of our improved bolting-machine. Fig. 2 is anelevation ot' the front end of the machine, with the feed mechanism in section. Fig. 3 is an. elevation of the rear end of the machine. Fig. 4 is a cross-section of the machine, looking rearward. Fig.5 is a cross- Fig. 6 is an enlarged longitudinal section of the feed end of the bolting-cylinder. Fig. 7 is a cross-section in line y 3 Fig. 1. Fig. 8 is a'front elevation of the disintegrating-head arranged within the bolting-cylinder. Fig.9 is an elevation of the bolting-cylinder, illustrating the means by which the bolting-cloth is secured thereto..

Fig. 10 is a longitudinal section thereof on an enlarged scale. Fig. 11 is alongitudinal section of the outer end of the clothing. Fig. 12 is a similar view, illustrating the means wheret by the sections of the clothing are secured together.

Like letters of reference refer to like parts in the several figures. A represents the frame of the machine, and A the inclosing casing, whichis made air tight as nearly as practicable;

' B represents the bolting-cylinder, whichis composed of two heads, D D, connected by stay bolts, rods, or bars d, and which is covered with bolting-cloth b of. suitable mesh, supported by suitable rings, 01. The head D of the feed end of the bolting-cylinder is provided with a hollow journal, e, which turns in a bearing, e, secured to the frame A, and the head D, at the tail end of the bolting-cylinder, is provided with a similar hollow journal,'e which'turns in a bearing, 0 t

f represents the rotating heaters, which are arranged in the bolting-cylinder and secured to rings f. The latter are attached by arms f to a shaft,f which passes through the hollow journals 0 c and is supported in beariiigs ff The cylinder B is slightly inclined from the head D toward the head Dto cause the material to pass slowly through the cylinder, or the heaters f may be arranged spirally to propel the material through the cylinder in the proper direction, or both means may be employed together to impart the necessary movement to the material.

g represents a rotating spiral brush, which is arranged transversely at the head of the machine, and gis the trough in which the brush rotates, and which is constructed of wirecloth or perforated metal having openings which permit the passage of the material to be bolted, but retain all larger impurities-such as dough-balls, nails, stones, &c. The latter pass through an opeping, gi nt the end of the perforated trough, into a'rec'ptac'le, G,'which t represents a screw-conveyer arranged underneath the perforated trough g', and t" r the casing A.

' by a ring of india-rubber or leather.

The head D is composed of an annular plate, It, having a marginal flange, 7a, to which the ticking ot' the bolting-cloth is secured. This plate It is provided with a central circular opening, On the outer side of the plate 7c are formed radial ribs or arms k which have their outer ends beveled to fit against the inner side of the head J, and which extend in- Wardlyacross the central opening, 70 to a curved or conical deflector, L,which surrounds the inner end of the journal 6 and projects with its small end into the openinglc The plate It, ribs 10 deflector L, and journal 6 are preferably cast in one piece. The deflector L does not extend to the hood J, so that an annular opening, l, is formed between the edge of the deflector and the hood. The material delivered into the hood J by the spout 1? slides through the annular opening 1, against the outer side of the plate k, and is picked up by the ribs 76 and elevated by the same until the ribs in rotating assume an inclination which causes the material resting on the same to slideoff, when the material strikes against the inner side of the deflector L, and is thereby deflected through the central opening, k into the bolting-cylinder B.

lis adisk or circular plate secured to the shafrf near the inner side of the opening 70 and provided with one or more circular rows of pinsor heaters. 1 arranged opposite the edge of the teed-opening W. The material en'- tering the bolting-reel through the opening 70 strikes against the. rotatingdisk l near its center, and is driven outwardly by the centrifugal force between the rotating pins 1', which disintegrate the material and distribute the same in a spray over the inner surface of the surrounding portion of the bolting-cylinder. In passing through the cylinder B trom'the head D to the head D the material is thrown by the beatersfagainst the bolting-cloth of the cylinder B and thereby separated, the flour passing through the meshes of the boltingcloth intothesurroundinginclosedspace,while the lighter particles remain in the boltin'g-cyl-t inder and finally arrive at the head D. The latter is provided on its inner side with radial ribs m and with a central discharge-opening, m, which is surrounded by a short collar, m extending rearward] y.

m is a curved or conical deflecton'havin g its convex side turned rearwardly and connected with the inner ends of the ribs mand the inner end of the journal 0 The material which reaches the inner side otthe head D is lifted by the ribs m until the increasing inclination of the ribs causes the material to slide oft',when it strikes the convex side of the deflector m and is thereby deflected rearwardly and discharged through the opening m into a receptacle," M. The latter is arranged between the head D and the rear wall of the casing A, and projects with'its lower end through said casing. This receptacle is provided with two automatic discharge-valves, not, which prevent the entrance of the external air, and which open at different times under the pressure of the accumulated material and permit the discharge of the material without admitting air to the cylinder B. The action of the heaters expels the air through the meshes of the bolting-cloth, and tends to draw airinward through the central discharge-opening and the receptacle M, communicating therewith. This is prevented by the automatic valve or valves, which are kept closed by the air-pressure until the weight of the accumulated material preponderates, when the valve next the material opens and discharges the same, but immediately closes again. It is very important 'to avoidthe admission of air to the cylinder, as the presence ot'air-currents interferes with the operation of bolting, and it is especially important to avoid the admission ofair at the tail end of the cylinder, because ingoing currents of air wouldcarry back into the cylinder the light floating bran-specks, which would result in rendering the flour specky.

0 represents an opening formed in the headboard of the casing A, within the collarj, for the purpose of admitting air to the head of the bolt,when required. The opening 0 is provided with a slide, 0, whereby it may be entirely closed, if desired, orits size maybe regulated and the iii-going air-currents controlled. By admitting air at the head of the bolt the air passes through the bolt from the head toward the tail, and the return of the specks from the tail portion of the bolt toward the head is thereby prevented.

P P representtwo serew-conveyers, arranged below the bolting-cylinder B, one above the other. and provided in their troughs with a suitable number of openings controlled by slides 11, so that the bolted material can be drawn ofi" at any desired point.

q represents the driving-pulley secured to the end of the shaftf and q is an endless belt, which runs around a small pulley, (1 on the shaftf and a larger pulley, f, on the shaft of the lowerconveyer, 'P, whereby the latter is rotated. i

r represents an endless belt, which runs around a small pulley, r, on the shaft of the lower conveyer, P, and a larger pulley, W, on the hollow'journal e whereby the cylinder B is rotated from the conveyor P with much-less speed than the heaters. The upper conveyer, P, is driven from the lower conveyer, P, by gear-wheels 3's, and the conveyer '5 is driven from the conveyor P by means of a countershaft, 8 and an endless belt, 8 The spiral brush G is driven from the conveyer i by gearcasing by the air-currents which are generated by the heaters, but they confine the different grades of material to thoseportions of the casin g in which each grade should be collected and to those portions of the conveyer'from which each grade should be drawn off. U

represents a blast-fan, which is actuated by a belt, a, from the beatershaftf the outer strips of ticking, 0), against said n represents theblast-pipe of the. fan, arranged parallel with the side of the cylinder B, in close proximity therewith, and provided on the side adjacent to the cylinder with perforations, whereby the air which is driven into the pipe by the blast-feuds delivered in jets upon the surface of'the bolting-cylinder,-Whel'eby the meshes of the latter are'treed from any material which may tend to adhere to the same. The distance between the cylindrical surface of the bolt alnhthe perforated air-pipe remains the same during the revolutions of the bolt, and the air-blast operates, therefore, uniformly upon all parts of the bolting-cloth.

The bolting-cloth is applied 'to the boltingcylinder in two. cylindrical sections, which may each be composed, if desired, of one or v two or more different grades of cloth;

a '0 represent strips of tickingor other strong cloth, secured to the outer ends of both sections of the bolting-cloth, and o 'u are strips of ticking secured to the inner ends of the bolting-cloth sectionsqwThe strips '22 v are provided with projectinlg hooks o which are secured to the strips by eyelets or rivets, as represented in Fig. 12, and the outer strips, o, are provided along their outer edges with cords a which are sewed into the strips along their outerv edges, so as to I'orm'a projecting rim on said strips.

'0 represents tapering rings'or hoops, which are applied to the outer sides of the outer strips, o, in such manner that the corded rims of said strips bear against the outer edges of the taperinghoops. The latter conform in their shape to'the taperingflauges k, and clamp flanges. The adjacent inner strips, '0, are drawn together by a cord, '0 which is laced around the hooks oflsecured to said strips, as clearly shown in Fig. 9. The tension applied to the holting-cloth-in this manner clamps the outer strips, 2;, firmly between the tapering flanges k and tapering hoops a, and at the same time stretches the bolting-cloth and equalizes the strain upon both sections of the bolting-cloth. The clothing of the reel is in this manner. easily applied, stretched, and, if necessary, as easily removed. 7

We do not in this application desire to cover any improvements herein shown except those which are specifically pointed out in theclairps,

and reserve the right to cover such other improvements by separate applications for patent.

We claim as our invention-- 7 1. The combination, with a rotating bolt and rotating beaters f, of a feed device composed of a head, D, having a central opening, ribs 10 a deflector, L,.and a'hood, J, substantially as set forth.

2. The combination, with a revolving bolt and revolving heaters, of means whereby the residue is discharged at the tail end of the bolt near the axis thereof, and a receptacle which receives the residue, and is provided with one or more automatic valves, which exclude the air from the bolt, substantially as set forth.

3. The OOHlblHlttlOll, with a revolving bolt, revolving heaters, and an inclosing-caseformed with an air-inlet opening at the head of the bolt, of a residue-discharge and one" or more automatic valves, which exclude the air from thetail end of the bolt, substantially as set forth.

4. The combination, in a flour-bolt, with a head having a tapering marginal flange, 7c, and a detachable tapering hoop, o surrounding said flange, of thebolting-cloth and a strip heads arranged near the extremitiesot' the bolt and provided with tapering flanges k, tapering hoops v and two sections of boltingcloth, provided at their outer ends with strips a, having raised outer edges, and at their inner ends with strips 1;, having projecting hooks o and a cord, a whereby the inner strips are 

